Bistable Joints Enable the Morphing of Hydrogel Sheets with Multistable Configurations

Li, Chen Yu1; Jiao, Dejin1; Hao, Xing Peng1; Hong, Wei2; Zheng, Qiang1; Wu, Zi Liang1

2023-03-01

10.1002/adma.202211802

ADVANCED MATERIALS   影响因子和分区

0935-9648

1521-4095

Joints, as a flexing element to connect different parts, are widespread in natural systems. Various joints exist in the body and play crucial roles to execute gestures and gaits. These scenarios have inspired the design of mechanical joints with passive, hard materials, which usually need an external power supply to drive the transformations. The incorporation of soft and active joints provides a modular strategy to devise soft actuators and robots. However, transformations of responsive joints under external stimuli are usually in uni-mode with a pre-determined direction. Here, hydrogel joints capable of folding and twisting transformation in bi-mode are reported, which enable the composite hydrogel to form multiple configurations under constant conditions. These joints have an in-plane gradient structure and comprise stiff, passive gel as the frame and soft, active gel as the actuating unit. Under external stimuli, the response mismatch between different gels leads to out-of-plane folding or twisting deformation with the feature of bistability. These joints can be modularly integrated with other gels to afford complex deformations and multistable configurations. This approach favors selective control of hydrogel's architectures and versatile design of hydrogel devices, as demonstrated by proof-of-concept examples. It shall also merit the development of metamaterials, soft actuators, and robots, etc.

bistable joints hydrogels morphing structures multistable configurations soft actuators

SCI ; EI

英语

NI论文

其他

National Natural Science Foundation of China["51973189","52173012"] ; Natural Science Foundation of Zhejiang Province of China[LR19E030002] ; Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering[2022SZ-FR004]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000941951600001

WILEY-V C H VERLAG GMBH

20231013680006

Actuators ; Gels

Control Equipment:732.1 ; Colloid Chemistry:801.3 ; Chemical Products Generally:804

MATERIALS SCIENCE

Web of Science

1.Zhejiang Univ, Dept Polymer Sci & Engn, Minist Educ, Key Lab Macromol Synth & Functionalizat, Hangzhou 310027, Peoples R China
2.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen 518055, Peoples R China

Li, Chen Yu,Jiao, Dejin,Hao, Xing Peng,et al. Bistable Joints Enable the Morphing of Hydrogel Sheets with Multistable Configurations[J]. ADVANCED MATERIALS,2023,35(15).

Li, Chen Yu,Jiao, Dejin,Hao, Xing Peng,Hong, Wei,Zheng, Qiang,&Wu, Zi Liang.(2023).Bistable Joints Enable the Morphing of Hydrogel Sheets with Multistable Configurations.ADVANCED MATERIALS,35(15).

Li, Chen Yu,et al."Bistable Joints Enable the Morphing of Hydrogel Sheets with Multistable Configurations".ADVANCED MATERIALS 35.15(2023).